TURN LIGHT REMOTE CONTROL: Easy to install. Lightweight and durable bicycle rear light that can be mounted on all bicycles, children's bicycle, adult bicycle. It can also be used as a helmet light, backpack light, warning light and more SET YOUR OWN LIGHT MODES: 5 light mode options: turn right, turn left, solid red, red-blue flash, all flashes bright. You can switch modes according to your needs and different occasions to get the best lighting experience and protect yourself USB RECHARGEABLE CR2032: The turn signal is USB rechargeable and the RED light turns GREEN after a full charge. 1-2 hour charge can be used for 4-6 hours. The remote control can easily replace the CR2032 battery WATERPROOF BIKE TAILLIGHT: The taillight is made of water-resistant material to ensure safe use in rainy weather. Try to get yours!